Include auto-merge information in gh pr view (#7385)

pkg/cmd/pr/view/fixtures/prViewPreviewWithAutoMergeEnabled.json

@@ -0,0 +1,55 @@
+{
+  "data": {
+    "repository": {
+      "pullRequest": {
+        "number": 12,
+        "title": "Blueberries are from a fork",
+        "state": "OPEN",
+        "body": "**blueberries taste good**",
+        "url": "https://github.com/OWNER/REPO/pull/12",
+        "author": {
+          "login": "nobody"
+        },
+        "autoMergeRequest": {
+          "authorEmail": null,
+          "commitBody": null,
+          "commitHeadline": null,
+          "mergeMethod": "SQUASH",
+          "enabledAt": "2020-08-27T19:00:12Z",
+          "enabledBy": {
+            "login": "hubot"
+          }
+        },
+        "additions": 100,
+        "deletions": 10,
+        "reviewRequests": {
+            "nodes": [],
+            "totalcount": 0
+        },
+        "assignees": {
+          "nodes": [],
+          "totalcount": 0
+        },
+        "labels": {
+          "nodes": [],
+          "totalcount": 0
+        },
+        "projectcards": {
+          "nodes": [],
+          "totalcount": 0
+        },
+        "milestone": {},
+        "commits": {
+          "totalCount": 12
+        },
+        "baseRefName": "master",
+        "headRefName": "blueberries",
+        "headRepositoryOwner": {
+          "login": "hubot"
+        },
+        "isCrossRepository": true,
+        "isDraft": false
+      }
+    }
+  }
+}

pkg/cmd/pr/view/view.go

@@ -77,7 +77,7 @@ func NewCmdView(f *cmdutil.Factory, runF func(*ViewOptions) error) *cobra.Comman
 }
 
 var defaultFields = []string{
-	"url", "number", "title", "state", "body", "author",
+	"url", "number", "title", "state", "body", "author", "autoMergeRequest",
 	"isDraft", "maintainerCanModify", "mergeable", "additions", "deletions", "commitsCount",
 	"baseRefName", "headRefName", "headRepositoryOwner", "headRepository", "isCrossRepository",
 	"reviewRequests", "reviews", "assignees", "labels", "projectCards", "milestone",
@@ -157,6 +157,15 @@ func printRawPrPreview(io *iostreams.IOStreams, pr *api.PullRequest) error {
 	fmt.Fprintf(out, "url:\t%s\n", pr.URL)
 	fmt.Fprintf(out, "additions:\t%s\n", cs.Green(strconv.Itoa(pr.Additions)))
 	fmt.Fprintf(out, "deletions:\t%s\n", cs.Red(strconv.Itoa(pr.Deletions)))
+	var autoMerge string
+	if pr.AutoMergeRequest == nil {
+		autoMerge = "disabled"
+	} else {
+		autoMerge = fmt.Sprintf("enabled\t%s\t%s",
+			pr.AutoMergeRequest.EnabledBy.Login,
+			strings.ToLower(pr.AutoMergeRequest.MergeMethod))
+	}
+	fmt.Fprintf(out, "auto-merge:\t%s\n", autoMerge)
 
 	fmt.Fprintln(out, "--")
 	fmt.Fprintln(out, pr.Body)
@@ -223,6 +232,29 @@ func printHumanPrPreview(opts *ViewOptions, pr *api.PullRequest) error {
 		fmt.Fprintln(out, pr.Milestone.Title)
 	}
 
+	// Auto-Merge status
+	autoMerge := pr.AutoMergeRequest
+	if autoMerge != nil {
+		var mergeMethod string
+		switch autoMerge.MergeMethod {
+		case "MERGE":
+			mergeMethod = "a merge commit"
+		case "REBASE":
+			mergeMethod = "rebase and merge"
+		case "SQUASH":
+			mergeMethod = "squash and merge"
+		default:
+			mergeMethod = fmt.Sprintf("an unknown merge method (%s)", autoMerge.MergeMethod)
+		}
+		fmt.Fprintf(out,
+			"%s %s by %s, using %s\n",
+			cs.Bold("Auto-merge:"),
+			cs.Green("enabled"),
+			autoMerge.EnabledBy.Login,
+			mergeMethod,
+		)
+	}
+
 	// Body
 	var md string
 	var err error

pkg/cmd/pr/view/view_test.go

@@ -314,6 +314,25 @@ func TestPRView_Preview_nontty(t *testing.T) {
 				`\*\*blueberries taste good\*\*`,
 			},
 		},
+		"PR with auto-merge enabled": {
+			branch: "master",
+			args:   "12",
+			fixtures: map[string]string{
+				"PullRequestByNumber": "./fixtures/prViewPreviewWithAutoMergeEnabled.json",
+			},
+			expectedOutputs: []string{
+				`title:\tBlueberries are from a fork\n`,
+				`state:\tOPEN\n`,
+				`author:\tnobody\n`,
+				`labels:\t\n`,
+				`assignees:\t\n`,
+				`projects:\t\n`,
+				`milestone:\t\n`,
+				`additions:\t100\n`,
+				`deletions:\t10\n`,
+				`auto-merge:\tenabled\thubot\tsquash\n`,
+			},
+		},
 	}
 
 	for name, tc := range tests {
@@ -504,6 +523,20 @@ func TestPRView_Preview(t *testing.T) {
 				`View this pull request on GitHub: https://github.com/OWNER/REPO/pull/12`,
 			},
 		},
+		"PR with auto-merge enabled": {
+			branch: "master",
+			args:   "12",
+			fixtures: map[string]string{
+				"PullRequestByNumber": "./fixtures/prViewPreviewWithAutoMergeEnabled.json",
+			},
+			expectedOutputs: []string{
+				`Blueberries are from a fork #12\n`,
+				`Open.*nobody wants to merge 12 commits into master from blueberries . about X years ago`,
+				`Auto-merge:.*enabled.* by hubot, using squash and merge`,
+				`blueberries taste good`,
+				`View this pull request on GitHub: https://github.com/OWNER/REPO/pull/12`,
+			},
+		},
 	}
 
 	for name, tc := range tests {